单项选择题

A．To see how certain chemicals produce different flavors.
B．To determine if a person can distinguish salty and sweet solutions.
C．To map the location of taste buds.
D．To count the number of taste buds.
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单项选择题
A．The organization of a conference.B．The cost of renting a conference room.C．The decoration of the conference room.D．The job of cleaning up the dining-room.
A．The organization of a conference.
B．The cost of renting a conference room.
C．The decoration of the conference room.
D．The job of cleaning up the dining-room.
单项选择题
Hundreds of families dropped into the sea when______.
A．a strong ice storm tilted the ship
B．the cruise ship sank all of a sudden
C．the badly damaged ship leaned toward one side
D．the frightened passengers fought desperately for lifeboats
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